Hilti WFE 380 / 450-E User manual

Category
Power sanders
Type
User manual

This manual is also suitable for

Hilti WFE 380 / 450-E is a powerful random orbital sander designed for professional use. It features a high-performance motor and a large sanding pad for efficient material removal. The variable speed control allows you to adjust the sanding speed to suit the material and application. The ergonomic design and low vibration levels ensure comfortable operation, even during prolonged use.

Hilti WFE 380 / 450-E is a powerful random orbital sander designed for professional use. It features a high-performance motor and a large sanding pad for efficient material removal. The variable speed control allows you to adjust the sanding speed to suit the material and application. The ergonomic design and low vibration levels ensure comfortable operation, even during prolonged use.

WFE 450E
English
Printed: 22.10.2018 | Doc-Nr: PUB / 5131022 / 000 / 02
Printed: 22.10.2018 | Doc-Nr: PUB / 5131022 / 000 / 02
WFE 450E
Original operating instructions
Printed: 22.10.2018 | Doc-Nr: PUB / 5131022 / 000 / 02
Printed: 22.10.2018 | Doc-Nr: PUB / 5131022 / 000 / 02
English 1
1 Information about the documentation
1.1 About this documentation
Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free
handling and use of the product.
Observe the safety instructions and warnings in this documentation and on the product.
Always keep the operating instructions with the product and make sure that the operating instructions
are with the product when it is given to other persons.
1.2 Explanation of symbols used
1.2.1 Warnings
Warnings alert persons to hazards that occur when handling or using the product. The following signal words
are used:
DANGER
DANGER !
Draws attention to imminent danger that will lead to serious personal injury or fatality.
WARNING
WARNING !
Draws attention to a potential threat of danger that can lead to serious injury or fatality.
CAUTION
CAUTION !
Draws attention to a potentially dangerous situation that could lead to slight personal injury or damage
to the equipment or other property.
1.2.2 Symbols in the documentation
The following symbols are used in this document:
Read the operating instructions before use.
Instructions for use and other useful information
Dealing with recyclable materials
Do not dispose of electric equipment and batteries as household waste
1.2.3 Symbols in the illustrations
The following symbols are used in illustrations:
These numbers refer to the corresponding illustrations found at the beginning of these operating
instructions
The numbering reflects the sequence of operations shown in the illustrations and may deviate
from the steps described in the text
Item reference numbers are used in the overview illustrations and refer to the numbers used in
the product overview section
This symbol is intended to draw special attention to certain points when handling the product.
1.3 Product-dependent symbols
1.3.1 Symbols on the product
The following symbols are used on the product:
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2 English
Wear eye protection
Wear ear protection
Wear protective gloves
Wear light respiratory protection
Protection class II (double-insulated)
Diameter
Revolutions per minute
1.4 Product information
products are designed for professional users and only trained, authorized personnel are
permitted to operate, service and maintain the products. This personnel must be specifically informed about
the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by
untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.
Write down the serial number in the table below. You will be required to state the product details when
contacting Hilti Service or your local Hilti organization to inquire about the product.
Product information
Random orbital sander WFE 450E
Generation: 01
Serial number:
1.5 Declaration of conformity
We declare, on our sole responsibility, that the product described here complies with the applicable directives
and standards. A copy of the declaration of conformity can be found at the end of this documentation.
The technical documentation is filed here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | 86916 Kaufering, Germany
2 Safety
2.1 Safety instructions
2.1.1 General power tool safety warnings
WARNING Read all safety warnings, instructions, illustrations and specifications provided with this
power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
Keep work area clean and well lit. Cluttered or dark areas invite accidents.
Do not operate power tools in explosive atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
Keep children and bystanders away while operating a power tool. Distractions can cause you to lose
control.
Electrical safety
Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of
electric shock.
Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
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Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the
risk of electric shock.
Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep
cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the
risk of electric shock.
When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric shock.
If operating a power tool in a damp location is unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of electric shock.
Personal safety
Stay alert, watch what you are doing and use common sense when operating a power tool. Do
not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools may result in serious personal injury.
Use personal protective equipment. Always wear eye protection. Protective equipment such as a
dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will
reduce personal injuries.
Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power
source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on
the switch or energising power tools that have the switch on invites accidents.
Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may result in personal injury.
Do not overreach. Keep proper footing and balance at all times. This enables better control of the
power tool in unexpected situations.
Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from
moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
If devices are provided for the connection of dust extraction and collection facilities, ensure these
are connected and properly used. Use of dust collection can reduce dust-related hazards.
Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore
tool safety principles. A careless action can cause severe injury within a fraction of a second.
Power tool use and care
Do not force the power tool. Use the correct power tool for your application. The correct power tool
will do the job better and safer at the rate for which it was designed.
Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be repaired.
Disconnect the plug from the power source and/or remove the battery pack, if detachable, from
the power tool before making any adjustments, changing accessories, or storing power tools.
Such preventive safety measures reduce the risk of starting the power tool accidentally.
Store idle power tools out of the reach of children and do not allow persons unfamiliar with the
power tool or these instructions to operate the power tool. Power tools are dangerous in the hands
of untrained users.
Maintain power tools and accessories. Check for misalignment or binding of moving parts,
breakage of parts and any other condition that may affect the power tool’s operation. If damaged,
have the power tool repaired before use. Many accidents are caused by poorly maintained power
tools.
Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking
into account the working conditions and the work to be performed. Use of the power tool for
operations different from those intended could result in a hazardous situation.
Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.
Service
Have your power tool serviced by a qualified repair person using only identical replacement parts.
This will ensure that the safety of the power tool is maintained.
2.1.2 Belt sander and drum sander safety warnings
Hold the power tool by insulated gripping surfaces, because the sanding surface may contact its
own cord. Cutting a "live" wire may make exposed metal parts of the power tool "live" and could give
the operator an electric shock.
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2.1.3 Additional safety instructions
Personal safety
Use the tool only when it is in perfect working order.
Never tamper with or modify the power tool in any way.
Always hold the tool firmly with both hands on the grips provided. Keep the grips dry, clean and
free from oil and grease.
When working, always guide the supply cord and the extension cable to the rear and away from
the power tool. This reduces the risk of tripping over cables while work is in progress.
Use a dust extractor, respiratory protection and protective goggles. Dust produced by sanding can
damage the lungs and the eyes.
Take breaks between working and do relaxation and finger exercises to improve the blood
circulation in your fingers.
Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone
containing quartz, minerals or metal can be harmful to health. Contact with or inhalation of the dust can
cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Certain
kinds of dust such as oakwood and beechwood dust are classified as carcinogenic, especially in
conjunction with additives for wood conditioning (chromate, wood preservative). Only specialists are
permitted to handle material containing asbestos. Use a dust extractor whenever possible. To
achieve a high level of dust collection, use a suitable dust extractor. If necessary, wear a respirator
appropriate for the type of dust generated. Ensure that the workplace is well ventilated. Comply
with national regulations applicable to the materials you will be working with.
The power tool is not intended for use by debilitated persons who have received no special training.
Keep the power tool out of reach of children.
Children are not permitted to play with the device and must be instructed accordingly.
Electrical safety
Check the machine’s supply cord at regular intervals and have it replaced by a qualified specialist if
found to be damaged. If the machine’s supply cord is damaged it must be replaced with a specially
prepared and approved supply cord available from Hilti Customer Service. Check extension cords
at regular intervals and replace them if found to be damaged. Do not touch the supply cord or
extension cord if it is damaged while working. Disconnect the supply cord plug from the power
outlet. Damaged supply cords or extension cords present a risk of electric shock.
Switch the electric tool off and unplug the supply cord in the event of an interruption in the electric
supply in order to avoid inadvertent restarting when the power returns.
Have dirtied or dusty power tools that are used frequently for working on conductive materials
checked at regular intervals by a Hilti Service Center. Dust, especially dust from conductive materials,
or dampness on the surface of the power tool can, under unfavorable conditions, lead to electric shock.
Power tool use and care
Secure the workpiece. A workpiece clamped in a vice or secured by some other clamping devices
is more secure than when held only by hand.
Wear protective gloves when changing accessory tools as they get hot during use.
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3 Description
3.1 Product overview
@
Guide grip
;
Speed adjustment thumbwheel
=
On/off switch
%
Grip
&
Dust bag
(
Dust box
)
Position of type identification plate
+
Quality grip
§
Backing pad
/
Sanding disc with velcro fastener
:
Brake ring
Auxiliary grip
3.2 Intended use
The product is a hand-held, electrically powered random orbital sander. It is suitable for dry-sanding wood,
wood-based materials, composites, varnishes, paints, plastics, plaster and filler compounds with wearing,
replaceable sanding pads.
3.3 Possible misuse
This product is not suitable for working on hazardous materials.
This product is not suitable for working in a damp environment.
Do not use the product for wet grinding.
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3.4 Items supplied
Random orbital sander with dust box, dust bag, operating instructions.
Other system products approved for use with this product can be found at your local Hilti Store or
at:www.hilti.group.
4 Technical data
For rated voltage, rated current, frequency and/or input power, refer to the country-specific type
identification plate.
If the device is powered by a generator or transformer, the generator or transformer’s power output must be
at least twice the rated input power shown on the rating plate of the device. The operating voltage of the
transformer or generator must always be within +5 % and -15 % of the rated voltage of the device.
WFE 450E
Weight in accordance with EPTA procedure 01
2.2 kg
No-load speed
5,000 /min …10,000 /min
Oscillations
10,000 /min …20,000 /min
Diameter, backing pad
150 mm
Eccentric stroke
4 mm
Outside diameter, dust removal connector
30 mm
4.1 Noise information and vibration values in accordance with EN 60745
The sound pressure and vibration values given in these instructions were measured in accordance with a
standardized test and can be used to compare one power tool with another. They can also be used for a
preliminary assessment of exposure. The data given represents the main applications of the power tool.
However, if the power tool is used for different applications, with different accessory tools, or is poorly
maintained, the data can vary. This can significantly increase exposure over the total working period. An
accurate estimation of exposure should also take into account the times when the tool is switched off, or
when it is running but not actually being used for a job. This can significantly reduce exposure over the
total working period. Identify additional safety measures to protect the operator from the effects of noise
and/or vibration, for example: Maintaining the power tool and accessory tools, keeping the hands warm,
organization of work patterns.
Noise emission values
WFE 450E
Sound power level (L
WA
)
93 dB(A)
Uncertainty (K
WA
)
3 dB(A)
Sound pressure level (L
pA
)
82 dB(A)
Uncertainty (K
pA
)
3 dB(A)
Total vibration
WFE 450E
Surface grinding (a
h
)
3.9 m/s²
Uncertainty (K)
1.5 m/s²
5 Operation
5.1 Positioning the sanding pad
Power tool, sanding pad and backing pad together form a system. Be sure to use the correct
combination and settings for the application.
The choice of sanding pad (grit size), speed and contact pressure determine the stock removal rate
and the finish.
1. Disconnect the mains plug from the power outlet.
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2. When installing the sanding pad, make sure that the holes in it are aligned with the dust-extraction holes
in the backing pad.
5.2 Setting the speed
Turn the speed adjustment thumbwheel to set the power tool to the desired speed.
You can also change the speed while the power tool is in operation.
5.3 Using a dust extractor
Always use a dust extractor when you are working with the power tool. The dust extractor consists of
dust box and dust bag. Optionally, you can use a vacuum cleaner.
1. Connect the dust box to the dust removal connector.
2. Insert the dust bag.
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5.4 Using a vacuum cleaner
Connect the vacuum cleaner to the dust removal connector.
5.5 Recommended grip positions
5.5.1 Stock removal work
1. Pull the auxiliary grip out of its parked position to the working position.
2. Use both hands to guide the power tool, keeping one hand on the grip and the other on the integral
auxiliary grip.
You can also use the guide grip instead of the integral auxiliary grip.
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5.5.2 Quality work
Guide the power tool with one hand on the quality grip.
That permits one-handed guidance close to the surface you are working on.
5.5.3 Working in the vertical plane
Guide the power tool with one hand on the quality grip.
5.6 Sanding
1. Set the desired speed.
2. Position the power tool with the whole of its sanding face on the workpiece.
3. Switch on the power tool.
4. Applying moderate pressure, move the power tool steadily over the workpiece.
6 Care and maintenance
WARNING
Electric shock hazard! Attempting care and maintenance with the supply cord connected to a power outlet
can lead to severe injury and burns.
Always unplug the supply cord before carrying out care and maintenance tasks.
Care
Carefully remove any dirt that may be adhering to parts.
Clean the air vents carefully with a dry brush.
Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as
these may attack the plastic parts.
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Maintenance
WARNING
Danger of electric shock! Improper repairs to electrical components may lead to serious injuries including
burns.
Repairs to the electrical section of the tool or appliance may be carried out only by trained electrical
specialists.
Check all visible parts and controls for signs of damage at regular intervals and make sure that they all
function correctly.
Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired
immediately by Hilti Service.
After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare
parts, consumables and accessories approved by Hilti for use with the product can be found at your
local Hilti Store or online at: www.hilti.group | USA: www.hilti.com
6.1 Backing pad
Check the backing pad for wear and foreign matter. Wear or foreign matter on the backing pad reduces
the adhesion of the sanding pad to the backing pad. Clean or replace the backing pad, as applicable. A
damaged backing pad has to be replaced immediately.
6.1.1 Changing the backing pad
1. Disconnect the supply cord plug from the power outlet.
2. Stand the product on the flats of the guide grip, so that the abrasive side of the sanding pad is visible.
3. Remove the sanding pad.
4. Use a suitable tool to release the three securing screws.
5. Remove the backing pad.
6. Clean and check the backing pad brake.
If necessary, replace the backing pad brake.
7. Place the new backing pad in position.
8. Hold the backing pad and tighten the three securing screws.
9. Check that the backing pad is installed correctly and not tilted.
10. Using the positioning guide to reinstall the sanding pad.
6.2 Backing pad brake
A steady increase in idling speed over time is indicative of wear of the brake ring of the backing pad
brake. Change the brake ring.
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6.2.1 Changing the brake ring of the backing pad brake
1. Disconnect the supply cord plug from the power outlet.
2. Remove the backing pad.
3. Remove the old brake ring from its seat on the power-tool housing.
4. Press the new brake ring into the recesses so that the four housing screws are correctly aligned. Make
sure that the snap hooks engage.
5. Install the backing pad.
7 Transport and storage
Do not transport electric tools with accessory tools fitted.
Always unplug the supply cord before storing an electric tool or appliance.
Store tools and appliances in a dry place where they cannot be accessed by children or unauthorized
persons.
Check electric tools or appliances for damage after long periods of transport or storage.
8 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 Troubleshooting
Trouble or fault Possible cause Action to be taken
Power tool does not start. Interruption in the electric supply Plug in another electric tool or
appliance and check whether it
works.
The supply cord or plug is defec-
tive.
Have the parts checked by a
trained electrical specialist and
replaced if necessary.
Electronic fault Have checked, and if necessary
replaced, by a trained electrical
specialist.
The power tool does not de-
velop full power.
The extension cord conductor
cross section (gauge) is inade-
quate.
Use an extension cord with
an adequate conductor cross
section.
Wrong speed. Turn the speed regulator to a
speed between 1 (low) and 6
(high).
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Trouble or fault Possible cause Action to be taken
No suction or reduced suc-
tion.
Sanding disc incorrectly
positioned.
Remove the sanding disc and
reposition it correctly, with the
openings aligned with the dust-
extraction holes in the backing
pad.
The dust bag is full. Dispose of the old dust bag and
insert a new dust bag.
Dust removal connector clogged. Remove the dust box and clear
the suction channel.
Sanding disc does not adhere
to backing pad.
Foreign matter on backing pad. Clean the backing pad.
Velcro of the backing pad is worn. Replace the backing pad.
Electrostatic discharge. Vacuum cleaner without anti-static
equipment.
To prevent electrostatic effects,
use an anti-static vacuum
extractor.
Interruption of the ground conduc-
tor.
Check the ground conductor.
9 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
Do not dispose of power tools, electronic equipment or batteries as household waste!
10 RoHS (Restriction of Hazardous Substances)
Click on the link to go to the table of hazardous substances: qr.hilti.com/r2085.
There is a link to the RoHS table, in the form of a QR code, at the end of this document.
11 Manufacturer’s warranty
Please contact your local Hilti representative if you have questions about the warranty conditions.
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Hilti = registered trademark of Hilti Corp., Schaan 20181005
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Hilti WFE 380 / 450-E User manual

Category
Power sanders
Type
User manual
This manual is also suitable for

Hilti WFE 380 / 450-E is a powerful random orbital sander designed for professional use. It features a high-performance motor and a large sanding pad for efficient material removal. The variable speed control allows you to adjust the sanding speed to suit the material and application. The ergonomic design and low vibration levels ensure comfortable operation, even during prolonged use.

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